Oral appliance



FIG. 1 is a rear view of an oral appliance;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view of the oral appliance.

FIG. 8 is a rear view of an alternative oral appliance;

FIG. 9 is a right side view of the alternative oral appliance;

FIG. 10 is a left side view of the alternative oral appliance;

FIG. 11 is a front view of the alternative oral appliance;

FIG. 12 is a top view of the alternative oral appliance;

FIG. 13 is a bottom view of the alternative oral appliance; and,

FIG. 14 is a perspective view of the alternative oral appliance.

CLAIM I claim the ornamental design for an oral appliance, as shown anddescribed.